I believe Neutrogena makes a product especially to help fade away red marks and acne scars. I haven't tried it myself, but I really like their acne stress control products. With time, the redness should go away. I used to have some redness where I had acne in the past and no longer have it, but it took about a year for it to all fade. I also had mild scars and I can hardly see them at all now. When my skin is clear, I like using a microdermabrasion kit at home to help keep my skin smooth and soft, and slough off old dead skin cells (I like the Mary Kay microdermabrasion kit). Also, be sure to moisturize!
I have acne rosacea, and my skin was very red, I found Guinot products which are fantastic. I use desensitising cream for ultra sensitive skin twice a day which moisturizes, reduces redness and protects. Twice a week I use their hydrating masque which also reduces redness, since using these products my skin is 100% better. You can buy them online or at a Guinot salon.
PPMS dx '96.
Taking each day as it comes !!